ASTROSAT CZTI

Data Quality Report

Orbit 08273

Creation date: 2024-06-27T15:30:25.762184
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1G07_065T02_9000001150_08273cztM0_level2.evt modeM0/AS1G07_065T02_9000001150_08273cztM0_level2_quad_clean.evt
Size (bytes)1,526,760,000323,933,760
Size1.4 GB 308.9 MB
Events in quadrant A10,471,3072,073,708
Events in quadrant B11,390,2632,093,263
Events in quadrant C10,551,3332,037,286
Events in quadrant D12,202,4491,956,718

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0483995
B0504074
C0488444
D0533374

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04880
B04880
C04880
D04880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A23993460.191723%
B239931150.479306%
C23993900.375109%
D239931800.750219%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 26453 23997 0 0 0.00% 0.00%
B 26453 23997 31 31 0.12% 0.13%
C 26453 23997 47 47 0.18% 0.20%
D 26453 23997 139 139 0.53% 0.58%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 0 254 30610 51.06 2711 2646 547.7
A 0 226 25279 41.32 2711 2646 547.7
A 12 194 24404 39.73 2711 2646 547.7
B 0 214 329057 632.99 2738 2664 515.6
B 11 51 127672 242.43 2738 2664 515.6
B 10 16 108125 204.53 2738 2664 515.6
C 9 54 231370 374.99 2645 2652 609.9
C 13 61 20257 28.86 2645 2652 609.9
C 3 202 6600 6.47 2645 2652 609.9
D 1 52 1153504 1677.41 2613 2552 686.1
D 13 105 309423 447.24 2613 2552 686.1
D 2 152 188225 270.6 2613 2552 686.1

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter